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minor fix to satisfy Fc_in and Fc_out

This commit is contained in:
tangxifan 2019-07-05 13:13:35 -06:00
parent 3077efa74f
commit 64d8e9663a
1 changed files with 19 additions and 5 deletions
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24
vpr7_x2p/vpr/SRC/device/rr_graph/tileable_rr_graph_gsb.cpp
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@ -1062,13 +1062,13 @@ void build_gsb_one_ipin_track2pin_map(const t_rr_graph* rr_graph,
assert (0 == actual_track_list.size() % 2);
/* Scale Fc */
int actual_Fc = Fc * actual_track_list.size() / chan_width;
int actual_Fc = std::ceil((float)Fc * (float)actual_track_list.size() / (float)chan_width);
/* Minimum Fc should be 2 : ensure we will connect to a pair of routing tracks */
actual_Fc = std::max(2, actual_Fc);
/* Compute the step between two connection from this IPIN to tracks:
* step = W' / Fc', W' and Fc' are the adapted W and Fc from actual_track_list and Fc_in
*/
size_t track_step = actual_track_list.size() / actual_Fc;
size_t track_step = std::ceil((float)actual_track_list.size() / (float)actual_Fc);
/* Track step mush be a multiple of 2!!!*/
if (0 != track_step % 2) {
track_step--; /* minus 1 to increase connectivity */
@ -1078,7 +1078,9 @@ void build_gsb_one_ipin_track2pin_map(const t_rr_graph* rr_graph,
/* Adapt offset to the range of actual_track_list */
size_t actual_offset = offset % actual_track_list.size();
/* rotate the track list by an offset */
std::rotate(actual_track_list.begin(), actual_track_list.begin() + actual_offset, actual_track_list.end());
if (0 < actual_offset) {
std::rotate(actual_track_list.begin(), actual_track_list.begin() + actual_offset, actual_track_list.end());
}
/* Assign tracks: since we assign 2 track per round, we increment itrack by 2* step */
int track_cnt = 0;
@ -1108,6 +1110,12 @@ void build_gsb_one_ipin_track2pin_map(const t_rr_graph* rr_graph,
/* Ensure the number of tracks is similar to Fc */
//printf("Fc_in=%d, track_cnt=%d\n", actual_Fc, track_cnt);
assert (actual_Fc <= track_cnt);
/* Give a warning if Fc is < track_cnt */
if (actual_Fc < track_cnt) {
vpr_printf(TIO_MESSAGE_INFO,
"Node(%lu) will have a higher Fc(=%lu) than specified(=%lu)!\nThis is due to that the number of tracks is much larger than IPINs!\n",
ipin_node - rr_graph->rr_node, track_cnt, actual_Fc);
}
}
return;
@ -1163,13 +1171,13 @@ void build_gsb_one_opin_pin2track_map(const t_rr_graph* rr_graph,
}
/* Scale Fc */
int actual_Fc = Fc * actual_track_list.size() / chan_width;
int actual_Fc = std::ceil((float)Fc * (float)actual_track_list.size() / (float)chan_width);
/* Minimum Fc should be 1 : ensure we will drive 1 routing track */
actual_Fc = std::max(1, actual_Fc);
/* Compute the step between two connection from this IPIN to tracks:
* step = W' / Fc', W' and Fc' are the adapted W and Fc from actual_track_list and Fc_in
*/
size_t track_step = actual_track_list.size() / actual_Fc;
size_t track_step = std::ceil((float)actual_track_list.size() / (float)actual_Fc);
/* Track step mush be a multiple of 2!!!*/
/* Make sure step should be at least 1 */
track_step = std::max(1, (int)track_step);
@ -1203,6 +1211,12 @@ void build_gsb_one_opin_pin2track_map(const t_rr_graph* rr_graph,
/* Ensure the number of tracks is similar to Fc */
//printf("Fc_out=%lu, scaled_Fc_out=%d, track_cnt=%d, actual_track_cnt=%lu/%lu\n", Fc, actual_Fc, track_cnt, actual_track_list.size(), chan_width);
assert (actual_Fc <= track_cnt);
/* Give a warning if Fc is < track_cnt */
if (actual_Fc < track_cnt) {
vpr_printf(TIO_MESSAGE_INFO,
"Node(%lu) will have a higher Fc(=%lu) than specified(=%lu)!\nThis is due to that the number of tracks is much larger than OPINs!\n",
opin_node_id, track_cnt, actual_Fc);
}
}
return;